Anybody know the BS number of this MEM switch fuse

[oldtimer]

Hi guys I am looking for a BS number for this switched fuse it is a MEM any help would be grateful.

I was at a PIR yesterday and noticed the DNO fuse seal was missing so I pulled it to check the fuse and found that it was blown with a strip of 1.5 copper across it and when I opened the MEM I found exactly the same customer not best pleased as I think ho thought the PIR was going to be a rubber stamp only to find no earthing for gas and water some of the pendant lights had no earth. Anyway comments welcome.

 

[oldtimer]

Yes I know I forgot to add the picture yet another grey moment.

 

[Guest123]

Thats a ye olde KMF.

Switching mechanism to BS 5419. As for the fuse inside, could be anything. Nowadays they come supplied with 60A or 80A 1361 type 2's.

 

[malcolmsanford]

mem kmf 800 bs en 60947-3

Click DB700 80A Fused Main Switch (KMF) - £27.85 - ETC Electrical Supplies

 

[malcolmsanford]

Thats a ye olde KMF.

Switching mechanism to BS 5419. As for the fuse inside, could be anything. Nowadays they come supplied with 60A or 80A 1361 type 2's.

You were waiting for the picture just as I was lol

 

[Guest123]

mem kmf 800 bs en 60947-3

Pre 1993 was BS 5419 Malc and that one looks older than 93 to me.


Lovin the avatar by the way.:icon12:

 

[malcolmsanford]

You maybe right mate, that looks in good nick for 20 yrs old though .......................

 

[oldtimer]

House was built in 1973 it looks original and its got MEM on it as I said with a blown 1361 60 fuse thats linked out with 1.5mm copper the customer was not happy plus he wanted to know the rating factor of the 1.5mm copper I took a stab at 300 amp plus but tried to tell him that this needs to get changed but he was thinking of leaving it I take it I am only obliged to inform him and not the DNO ?

 

[Knobhead]

Based on one strand out of a 16mm is about 100A a 1.5mm should be about 65A ish. But I wouldn’t like to be around when it blows. With nothing to contain the arc it will vaporise the carrier and switch. Also with no thermal containment the 65A will rise to ?, but there will be an even bigger bang!

 

[Knobhead]

Only just noticed you said the service head was the same, where is this? I just want to be sure I’m far enough away to watch the service head explose from a safe distance!

 

[oldtimer]

Only just noticed you said the service head was the same, where is this? I just want to be sure I’m far enough away to watch the service head explose from a safe distance!

Its outside in one of these weatherproof wall box