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I do some electrical maintenance for a local church, the main hall is lit by around 12 LED floodlights, (they do look cheap) they seem to be constantly dying, they have asked if a wood work shop across the road could be causing this, with saws and other machinery constantly starting up, I’ve...
I have a Liquid Nitrogen tank getting installed on site, its 16m high adjacent to a taller building and I'm providing the power to it. There are plenty of earth spike locations near it but, purely from observation other sites don't appear to have any means of protection so, how do I know if it...
I have replaced fuse board for nic eic assessment. Discovered few issues with current wiring (no bonding, supplementary bonding connected to socket earth, r1r2 0.01ohm.. .) but my question is for light testing do I need to measure r1r2 at light fitting (wall light) or switch is...
I recently purchased a kinetic light switch with two buttons and two receivers like this one
Kinetic Light Switch and Receiver Kit - Double | Kinetic Self-Powered Wireless Switches - https://wireless-switches.com/product/kinetic-light-switch-and-receiver-kit-double/ (if links are not...
I was asked earlier this week to look at a solar system on an office/warehouse that had stopped working (not my install). The strings all come into a Fronius DC box on the roof. When I opened it up it was pretty clear why the system had stopped producing:
I'm looking for opinions on what may...
Just pondering why hospitals and large commercial sites have many many earth pits sited 1 or 2 meters away from outer walls on corners and on pillars.? Is it to do with lightning protection or are the earthing arrangements tns or tt for these installs.?
How to test an earth electrode resistance for Lightning Protection System in the middle of large concrete pad? I cannot not find a soft ground for spikes to drive in for testing. Is there any other ways of measuring the earth electrode resistance value?
Hi, I own a top floor apartment in Swansea. The lightning conductor above the roof of the apartment block runs through a channel along the edge of the roof which is permanently flooded with rain water (except after long dry periods) to a depth of 25-75mm. This doesn't seem safe to me. I would be...
Customer phoned on Friday looking for a few jobs done, he says his BT line has been struck by lightning twice this year wiping out phones and routers etc. Is there anything can be done to protect his gear other than maybe one of those surge protection extension thingys??
Good evening guys,
I have just had a call to go and have a look at a hotel tomorrow that was hit by lightning yesterday morning. All i know is that its a 2 story building and was hit and now has a hole in the roof and that there is no lightning protection system in place.
They are worried that...
was hoping someone could explain to me how I test/verify the lightning protection bonding.
im generally a domestic electrician as I work for myself, and I've never come across a property with this type of bonding. I'm subcontracting to a local electrician and do all his testing for...
Well lads some advice if you please
Looked for Quoting to do an EICR in a church with the following items from a PIR done 14 months ago.
1) Lightning conductor box on PIR cert was ✓ N/A. (It has a lightning conductor) my question is does the lightning conductor require connection to the MET...
Hi guys and girls,
Been asked to quote to carry out an inspection on a local church's electrical system, is there anything special to look out for? Haven't done anything on very old buildings, and would lightning protection come into it?
Thanks in advance.
Im an NIC registered self employed spark and Ive been asked by a contact of mine to test the lightning protection system at the local church.
Ive researched this on the internet as Ive never done this and am I right in thinking you get an earthrod tester and test the system all...
Hope this is inthe right section,
I have been asked to quote for testing the lightning protection on a small sized building, i have read about testing across the joints and needing to get a certain reading etc but other than that im not sure what is required.
Is it that difficult a...
i need some help
i have a 800amp main incomming over current switch with a bolt on earth leakage current relay,that seem to be tripping in bad weather ie when lightning is around,the site has 12 other sub boards none of which have the same device.
my question is does anyone else think...
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