Hi,
I have a Victron Multiplus-II 5kVA inverter/charger with Pylontech US5000 batteries installed in my house along with a 6.8kWp PV array and associated charge controllers. This installation has full DNO G99 approval and was installed to BS7671 and has been running great for about 18 months...
Hi. I've read much about ac vs dc but can't find a 'simple' answer. If current alternates 50 times per second in a uk mains circuit, why do live and neutral not swap 50 time per second? On these forums, I've read that it does, so that copper does not migrate as it would in a dc circuit. I've...
I have a bathroom fan with a moisture detector that turns it on and off. It also has a control circuit to turn it on/off when moisture is not connected. This is a no voltage/no current circuit.
I want to add a parallel control circuit that would of course be no load no current that I can turn...
Hi
I have UPS 50KVA and the inverter output AC voltage is feeding a distribution panel 120/208 V 4 wires when I check UPS display it shows me that output current which is the distribution panel phases as followings phase one = 30A while Phase 2 = 0A and phase 3 = 0A is this a problem !? Shall...
Hi All
I'm a professional mobile app developer. Around 12-13 years ago I created a couple of apps for the fire protection / safety industry that a few people found useful. I put those to one side as I found myself switching careers to be a full time developer and skilling up required the whole...
Hi all.
I am installing some metal trunking vertically in a meter cupboard to contain all the meter tails for an apartment block. I have 5 sets of tails entering one “row” of meters, and about 300mm further down the trunking I have another 4 sets of tails entering the other row of meters. Due...
Having a challenge understanding the concept behind why when you measure across line and neutral (live circuit) using voltage indicators we have voltage reading of 230V single phase. If there is current flow in the neutral why is it termed as 0V ?
On that basis, second question - If I tested...
I'm working on a robotics project and currently we are designing a battery. This battery is dedicated to the motor driver and two BLDC motors. I want to know how much current the battery will draw if we drive the robot at a certain speed. More specifically, how to calculate the speed of a BLDC...
I have an inground pool with a 22 year old, 120vac light fixture in a niche connected to water-holding conduit running to a switch in an outbuilding. I removed the fixture to clean the niche. The fixture was just floating at the surface, still connected, with the wall switch off. A little extra...
Hi,
I'm interested in a house built around the 1980's in Northern Ireland. I took a few photos of the consumer unit etc. which is situated in the garage.
The house has a a double electric oven, 2 electric showers, an immersion water heater as well as all our usual electrical sockets spread...
an overload current is classified as an overcurrent occuring in a circuit which
is electrically sound
has a fault between phase conductors
has a fault between Neutral and Earth
has a fault between line and earth
Hi all, after a bit of advise if ok please. We have a switch which currently only powers one single LED down light in our ceiling. From this switch I would like to add a feed (already installed) to provide power to three LED wardrobe lights. Max wattage is an extra 9w on top of the current 5...
I am upgrading garage lighting. I have installed 12 40W batten lights (cheap Amazon variety - don’t have specs).
6A breaker in Garage consumer panel is tripping on inrush current. House consumer panel 32A breaker for garage is also tripping occasionally. Both are type B. No surprises so far...
Hey folks, i work for a relatively small company, but we are doing some big jobs. And right our headache is taking over outdoor lighting maintenance from other guys (you know that situation where the only way to know anything about light is to get up there on the pole and open it to read that...
Hi first time on this forum and looking for some advice.
I have a second home with incoming network connection as shown below.
I don't like uninsulated wires attaching to the house like this and is dangerous when working with ladders etc. I have looked up the regs, 1988, and as far as I can...
Confused as to what the earth fault loop is. I'm aware it's the path that fault current takes (Line-Earth) but how many times does fault current "loop"?
Hi,first off this does not relate to work I intend to DIY. I'm trying to sanity check information I've been asked to provide to the installers.
I want the solar invertert to connect in the garage, where there's a DB fed from the house via SWA.
This is what's asked ..
As the proposed PV...
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