I only had the misfortune of Sunderland Forge self igniting switchboards with the excellent ACBs of Whipp & Bourne. These only burned when set alight by the field of never-stay-tightened 'tulip' connections in which they tip-toed.
The one they provided for Pallion Huill 19 was, on owners insistence, provided without withdrawable starters and therefore without the many potential high resistance fault opportunities presented by both genders of their 'tulip' connectors. As a consequence it did not burn down.
__________________
David V
Lord Finchley tried to mend the electric light
Himself. It struck him dead and serve him right
It is the duty of the wealthy man
To give employment to the artisan
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