Eugene

SANS 10142-1:2003 Edition 1.1 (As amended 2003) 6.3.3.2 The means of identification for an a.c. circuit may be by colours or by numbers, as follows: a) where colours are used 1) a neutral conductor shall be identified by black only, 2) an earth continuity conductor shall be identified by the bi-colour green/yellow only, or by being bare. Green/yellow insulated conductors shall NOT be used as live conductors under any circumstances, 3) a phase conductor shall be identified by a colour other than green/yellow, green or black, and Amdt 1 NOTE Welding cable manufactured to SANS 1576 (SABS 1576) should not be used in circuits above 100 V. Amdt 1 4) the colours may be applied at the ends of the conductor (of a multicore cable) by means of durable colour marking (e.g. insulating sleeves or by electrical insulating tape wound more than once around the conductor), and Amdt 1 where numbers are used, "0" shall indicate the neutral conductor. Amdt 1 NOTE Where the purpose or the function of a conductor is apparent, marking is not required. Extract from my 2003 copy, doubt whether it has changed much since I retired.

Doesn't make sense, the current imbalance is sensed by electronic components, the only wear and tear can occur with the mechanical tripping components. Have an electrician Meggar the outbuilding circuits, a combined insulation resistance reading 11Kohm and you will have tripping, each individual circuit should have reading not less than 1Mohm. Also check the tripping current with an Earth Leakage tester, with all circuits isolated, tripping will occur at 20ma. With circuits on, tripping will occur at a lower current.

My 3K Axpert is working with WP V1.07 and Windows 7.1 Check configuration - Com port plug & play setting = Allow

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D-Link smart plug available from takealot http://www.takealot.com/d-link-wi-fi-smart-plug/PLID40723923

I have the 3Kva KS, has WPS charge controller. Batteries - 24V PV - 1500W (6 x 250W in parallel only) Good price if one of the MKS models. 24V, 48V and 48V Plus

I can't imagine a cable supply company not having larger cable, they must have quoted you on Surfix cable which only goes up to 6mm2. 6mm2 is rated up to 40A, you will have to double up if determined to use 6mm2. The length of the cable and load is not the only criteria, the size of cable must also match the circuit breaker capacity i.e. 60A. As a matter of interest, the short circuit current (KA rating) of circuit breakers is also important especially if near a substation.

This method works like a charm, recommend a junior hacksaw only.

Spanner in the works. It's illegal to bond the neutral to earth in any installation, can only be done by the supply authority. I have done it on my inverter, but the ideal situation would if all inverters had automatic neutral to earth bonding when the power supply fails.

I have mine setup the same. Axpert 3KW KS. 2 - 105Ah 12V batteries 2 - 255W pv panels Eskom bypassed, switched on all lights (LED's), the load went up to 805VA / 751W, frequency stayed dead on 50.1Hz.

I don't think there is any synchronisation, the inverter is off grid so it is not needed, besides the changeover can be set for appliance or ups. I suggest sending it for repairs.

Good advice. Years ago 'Wiring of Premises', domestic installations, aerials and TV dishes had to have a separate earth spike with minimum 10mm2 bare copper conductor and bonded to the installation earthing system. SANS 10142 now only requires a 2.5mm2 conductor connected to the installation earthing system.

Hoop iron strap.

Dishwashers and washing machines have motors, therefore the load is inductive. My recommendation: Inverter as a UPS, i.e. computers, TV, HiFi and lights. No earth leakage feeding Inverter, bond inverter neutral output to earth, red dedicated plugs (no earth leakage necessary), Inverter feeding appliances: No earth leakage feeding Inverter, bond Inverter neutral output to earth, earth leakage feeding circuits.

I'm a little confused, the Council DB should only have a mcb and a KWH meter, your main DB is where your geyser controls and the ELR should be installed.

Try installing the latest Microsoft .Net Framework, usually the program reports when it is required.

Maximum size of Cabtyre cable is 4mm2 (32A) Trailing cable is available in large sizes, not sure about the colour coding of 3 core, it may be for 3 phase and not have a yellow/green conductor. Note that: loads of thin copper strands are difficult to get into the din rail terminals.

First of all, 8mm diameter ? That's about 50mm2 or 1swg cable Cable sizes are 6mm2 then 10mm2 then 16mm2 What are the inverter ratings ?.

The IP rating should be on the enclosure, looks like IP65 - Complete protection from dust and low pressure water spray from all directions, unless the gasket has been removed,

Chris You may have to watch for overheating on your terminals, looks like 32A AC rated with 16mm2 cable to the charge controller, short loop 4mm2 ?

Suggest you also bond the panels, galvanic corrosion also occurs between aluminium components, a jointing paste is always used for aluminium cable and lug terminations.

My PWM's pv array max open circuit = 60V With 124V, you should be able to install: 2 modules in series 3 strings in parallel 72V x 25A = 1800W The advantage is 2 thin cables instead of a thick one.

Your best solution is a dedicated plug (red) circuit feeding the inverter (UPS) with dedicated plugs feeding your equipment. No Earth Leakage required.