Evening all..
A friend/customer has just asked if I could connect up this commercial washing machine down at his domestic stables. He has had it in his house for 10 years. Recently it has started tripping the B40 MCB. It does not trip immediately so I don't think it is the inrush, plus it did...
TP&N voltage ratings for products, equipments etc are expressed alternatively as 440/250VAC or 250/440VAC (or 250/440 Vac etc), or in other representations. What is the "technically correct" format and in what standard/specification is it embedded? (is it IEC60050?).
Thank you.
I have to install a shower isolation pull-cord switch. The shower is on its own feed from the consumer unit and has its own 30A MCB. The shower unit is a Mira Event XS which has hot and cold water supply and hence consumes only 150w in normal use. The shower unit is fused at 3 amps.
My...
If SCR has 9000amps at 50hz non-repetitive current rating.
What will be it's non-repetitive current rating for 35uS ??
Or Can we use this SCR for 3600amps / uS for 35uS ?
I am an adult learner. I understand the theory behind the 30mA trip rating (for example) of an RCD but I need some help understanding what the 63A rating (for example) actually means. My understanding is that RCD's do not provide over current protection, that would be provided by MCBs (for...
Hi All
Am continuously getting failed EICR'S sent over to quote on remedials for non fire rated downlights. These are lights in question. I see they have exposed conductors so would personally probably code 2 but what would code be for fire rating they are low voltage if that even makes a...
Hi I’m looking for some advice on what size/rating rcbo I should have installed for a radial circuit which will be running 2 washing machines 2 tumble dryers and steam iron and steam press all domestic appliances and possible all running at a single time ? I’ve been told conflicting info and...
Evening
Just want to clarify what is adequate for providing fire rating for lighting. My understanding is that if in an apartment block but has concrete seperation between floors there is no need for fire rated fixtures. Guy currently has some low voltage halogen GU5.3 fittings with no fire...
I thought both sides could each handle 13 amps?
View: https://www.reddit.com/r/electricians/comments/hpywd5/reminder_to_my_uk_sparky_friends_that_a_double/
Why are 16, 32 and 63 amps used as an MCB rating instead of 15, 30 and 60 amps? Best theory that I can come up with was when the UK switched to 230 volts this was to make up for the drop in voltage but have noting to back that up.
Here are the ratings I'm familiar with:
View...
On a commercial 200A TP&N supply, what rating would the substation feeder pillar fuses be? Would they typically also be 200A or a higher rating?
Source URL: Electrical Forum - https://www.electriciansforums.net/forums/electrical-forum.15/
Hi lads,
question regarding the IPrating of equipment. Going on BS7671 18th edition. If I require a piece of equipment rated IP66 which is dust tight and protected against power water jets,does IP67 meet these requirements ? I have heard from other electricians that IP67,does not meet IP66...
Hi All,
I'm a retired spark and separate double ovens and hobs (induction) weren't around in my day. I did mostly power station work after a few years domestic. My daughter asked me to wire in her double oven and hob, however the rating on the double oven says, Oven A .77kW per cycle and similar...
What fuse rating do I need to put in between the starter and leisure battery? I have a 12V 75AH Starter battery and 110Ah leisure battery. Cable size 16mm or 8mm. (this is for my off the grid van :) )
Hi guys
New to this forum and thought I’d ask the powers to be on here for some advice.
Basically I’m on a job installing some electrical instruments. The instruments are quite small and have come with the gland body , lock nut and ip washer on the outside . The reason for this is to reduce...
Hi all,
I noticed on my consumer unit that the main switch is rated for 100Amps, however the total load of all the MCBs is over 150Amps!
I appreciate that diversity COULD (?) be applied in that not every circuit would be simultaneously running at full capacity, but is the installation...
greetings :)
Was curious about the ceiling lights in the kitchen if they were fire rated or not.
Google was no help with model info.
There’s an F in a triangle symbol on the side, but I don’t know if that means anything.
Any ideas?
Thanks,
Gary
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