This section is from the book "Canadian Banking Practice", by John T. P. Knight.
Question 478. - (1) A customer having only a trust account signs a full power of attorney in favour of B, but signs only his usual signature, without the words "in trust." Can B operate the trust account?
(2) A customer has two accounts, one in trust and the other in his own name. He gives a full power of attorney to B and signs it twice, first his own signature and then with words "in trust." Can B operate both accounts?
(3) Customer referred to in No. 2 inserts in power of attorney form the words "for the undersigned, etc., for all own funds and trust account, to make, sign, etc.," and signs twice as in No. 2. Can B operate both accounts?
Answer. - (1) If the trustee has power to delegate his authority to another, and deposits the power of attorney in the bank expressly for such purpose, his attorney would be entitled to operate the trust account, but it would be better to have the customer add the words " in trust" to his signature on the power of attorney. A full power of attorney not given to or held by the bank would not authorize B to operate the trust account.
(2) See answer above. In this case it would be better to have a separate power of attorney covering each account.
(3) See answer above. Separate powers of attorney would be better, but one would suffice. The double signature makes no difference.